My ASUS K555U keeps on “crashing”

Hey, guys.

I’ve recently been experiencing an issue with my ASUS laptop, Whenever I’m working online with numerous tabs open, my device suddenly stops responding. The cursor doesn’t appear when using the mouse and the trackpad. Since it freezes, the only option I could think of every time this happens is to power cycle the laptop by turning it off through the power button. Am I missing something?